As you know, kids are QQing about Drow being over-powered. She is not over-powered as I just played her and, despite the fact that I indeed stomped the other team, several factors played a part in my success:
1. Free Farm and Kills Early Game: I laned against a Kunkka and Nyx. Neither of them tried to deny me and even if they did, I would've been able to harass them. They also barely got any creep kills. They both tried to kill me and my lane partner Jakiro and failed, giving us about 3-4 kills during the laning phase. I had boots, Shadow Blade and Yasha by 20 minutes.
2. Bad Players: Their Kunkka never landed a successful ult. I kept their more skilled players silenced in every gank ( Queen of Pain and Magnus ). They never bought anything to counter my invisibility from Shadow Blade. They over extended in team fights when they thought I was close to death which made it easier for me to just kite them until they died.
3. Good Teammates: My Jakiro baby-sat me until I was farmed enough to farm alone. Juggernaut was dominating his lane and took a tower very early on. Windrunner wasn't the best but she did more than the enemy Kunkka. My team pushed lanes more often than the enemies and bought wards.
So, why did I win this game? Because of my hero pick, or because a combination of bad players and mistakes on the enemy team and cooperation and teamwork on my side?
Stop whining and learn how to play.